EP4120456A1 - Battery case and battery pack - Google Patents
Battery case and battery pack Download PDFInfo
- Publication number
- EP4120456A1 EP4120456A1 EP21848979.7A EP21848979A EP4120456A1 EP 4120456 A1 EP4120456 A1 EP 4120456A1 EP 21848979 A EP21848979 A EP 21848979A EP 4120456 A1 EP4120456 A1 EP 4120456A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling plate
- stiffener
- box body
- plate
- battery box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001816 cooling Methods 0.000 claims abstract description 164
- 239000003351 stiffener Substances 0.000 claims abstract description 123
- 238000009413 insulation Methods 0.000 claims description 13
- 230000000694 effects Effects 0.000 abstract description 10
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000009471 action Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/256—Carrying devices, e.g. belts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- This disclosure relates to the field of batteries, and in particular to a battery box and a battery pack.
- a battery box is mainly configured to support and accommodate a battery module. Since the battery module will generate heat during use, a cooling system needs to be adopted to cool the battery module.
- the cooling system includes a cooling plate attached to an outside of the battery box, and the cooling plate is connected with the battery box.
- a battery box and a battery pack are provided in implementations of the present disclosure, and improve a cooling effect of a cooling system on a battery module.
- the battery box may include a box body, a cooling plate, and a stiffener.
- the cooling plate is connected with an outside of a wall plate of the box body, and the stiffener is connected with the box body and abuts against a side of the cooling plate away from the wall plate.
- the cooling plate is connected with the wall plate, and the stiffener is connected with the box body and abuts against the side of the cooling plate away from the wall plate.
- the stiffener can keep the cooling plate and the box body in a fitting state. If stiffener does not exist, when the cooling plate is subjected to an external pressure or under an action of a battery module, the cooling plate may be bent and deformed, resulting in a gap between the cooling plate and the wall plate.
- the stiffener is connected with the box body and abuts against the cooling plate to increase strength and stiffness of a connection between the cooling plate and the box body, so as to avoid a sealing failure caused by a force applied to a weld seam between the cooling plate and the box body during operation of the battery pack, which leads to a failure of a cooling effect of the cooling plate.
- the cooling plate may define grooves at the side of the cooling plate away from the box body, and the stiffener may be provided with convex portions in fit with the grooves, and the convex portions may extend into the grooves respectively and abut against at least part of inner side surfaces of the grooves.
- Fitting connections among the convex portions and the grooves can make the stiffener and the cooling plate better abut against each other, so as to increase a fitting degree of the stiffener and the cooling plate.
- the cooling plate may have convex portions at the side of the cooling plate away from the box body, and the stiffener may define grooves in fit with the convex portions, and the convex portions may extend into the grooves respectively and abut against at least part of inner side surfaces of the grooves.
- a number of the convex portions may be less than or equal to a number of the grooves.
- a surface of the cooling plate away from the box body may be a flat surface.
- the stiffener may be not provided with convex portions and directly abut against the flat surface of the cooling plate; or the stiffener may be provided with the convex portions and abut against the flat surface of the cooling plate through the convex portions.
- the stiffener may be in surface contact with a surface of the cooling plate away from the wall plate.
- a surface of the stiffener facing the cooling plate may be a curved surface or a flat surface.
- the battery box may further include a heat insulation layer attached to the side of the cooling plate away from the wall plate, and the heat insulation layer may abut against the stiffener.
- the heat insulation layer can insulate the cooling plate to prevent a cooling capacity of the cooling plate from losing to the side of the cooling plate away from the wall plate.
- the stiffener may be implemented as a plurality of stiffeners arranged at intervals.
- the stiffener may be implemented as three or more stiffeners, two stiffeners are connected with two ends of the cooling plate respectively, and rest of stiffeners are connected with a middle of the cooling plate.
- two opposite ends of the stiffener may be located at two sides of the cooling plate respectively, and one end of the stiffener is connected with one side of the wall plate.
- the box body may be provided with a lifting lug
- the wall plate may be provided with a connecting portion
- the connecting portion may be connected with an end of the lifting lug to form a lifting ring
- the stiffener may be connected with the connecting portion
- the connecting portion may be integrated with the lifting lug.
- the connecting portion is integrated with the lifting lug, which is beneficial to reducing a space occupied by the lifting lug, so as to reduce a volume of the box body.
- the stiffener may be plate-like, and a surface of the stiffener away from the wall plate may be parallel to the wall plate.
- a battery pack is further provided in implementations of the present disclosure.
- the battery pack includes a battery module and the battery box which is provided according to the above implementations, and the battery module is mounted in the battery box.
- orientation or positional relations indicated by terms such as “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside”, and “outside” are orientation or positional relations based on the accompanying drawings, or orientation or positional relations in which the application product is placed conventionally in use, or orientation or positional relations commonly understood by those skilled in the art, only for facilitating description of the present disclosure and simplifying the description, rather than indicating or implying that the referred devices or elements must be in a particular orientation or constructed or operated in the particular orientation, and therefore they should not be construed as limiting the present disclosure.
- FIG. 1 is a schematic structural diagram of a battery box 100 from a first view provided in implementations of the present disclosure from a first view
- FIG. 2 is a schematic structural diagram of a battery box 100 from a second view provided in implementations of the present disclosure.
- a battery box 100 is provided in implementations and configured to accommodate a battery module.
- the battery box 100 may include a box body 110, a cooling plate 120, and a stiffener 130.
- the box body 110 may define an accommodating space, the accommodating space can be used to accommodate the battery module (not illustrated in the accompanying drawings), the battery box 100 may have a wall plate 112, an inside of the wall plate 112 can constitute an inner wall of the accommodating space.
- the cooling plate 120 may be connected with the box body 110, and the cooling plate 120 may be connected with an outside of the wall plate 112, that is, the cooling plate 120 may be connected with a side of the wall plate 112 away from the accommodating space.
- the stiffener 130 may abut against a side of the cooling plate 120 away from the wall plate 112, and the stiffener 130 may be connected with the box body 110.
- the wall plate 112 connected with the cooling plate 120 may be a bottom plate of the box body 110, and the wall plate 112 may constitute a bottom wall of the accommodation space. It can be understood that in other implementations of the present disclosure, the wall plate 112 may be a side plate of the box body 110, and the side plate may be connected with the cooling plate 120. Alternatively, in other implementations of the present disclosure, the cooling plate 120 may also be disposed on both the bottom plate and the side plate of the box body 110 as needed.
- the wall plate 112 is the bottom plate of the box body 110. It can be understood that an identical effect may also be realized if the wall plate 112 is the side plate of the box body 110.
- the wall plate 112 of the box body 110 and the cooling plate 120 may be welded by friction stir welding.
- FIG. 3 is a schematic structural diagram of a cooling plate 120 and stiffeners 130 provided in implementations of the present disclosure.
- the cooling plate 120 may be molded by stamping, and the cooling plate 120 may be provided with multiple cooling channels (not illustrated in FIG. 3 ) for a liquid coolant to flow. Therefore, multiple long-strip grooves 121 can be defined between outside walls of adjacent cooling channels.
- the cooling plate 120 may define multiple grooves 121 at a surface of the cooling plate 120.
- the stiffener 130 may abut against the surface of the cooling plate 120.
- the stiffener 130 may be provided with multiple convex portions 131, and one convex portion 131 is corresponding to one groove 121.
- One convex portion 131 may extend into one groove 121, such that each convex portion 131 can abut against at least part of an inner side surface of each groove 121.
- the each convex portion 131 may extend into each groove 121, such that the each convex portion 131 abuts against a bottom surface, an inner side surface, or all inner surfaces of the each groove 121.
- each convex portion 131 abuts against part of or all of inner surfaces of the each groove 121, which can avoid relative movement between the each convex portion 131 and the each groove 121, so as to make the stiffener 130 and the cooling plate 120 present a better abutting state, thereby preventing the stiffener 130 and the cooling plate 120 from moving relative to each other.
- the number of convex portions 131 may be less than the number of grooves 121.
- the convex portions 131 of the stiffener 130 only extend into a part of grooves 121, which can also stabilize the stiffener 130 and the cooling plate 120.
- each groove 121 has almost the same shape and size, so the each convex portion 131 has almost the same shape and size. It can be understood that in other implementations of the present disclosure, the multiple grooves 121 may be designed to be not exactly the same as needed, and corresponding convex portions 131 may be adaptively matched and adjusted.
- the cooling plate 120 may not be in the shape illustrated in implementations of the present disclosure, and the grooves 121 on the surface of the cooling plate 120 may be defined in a process of preparing cooling channels in an early stage or defined in a later stage.
- a surface of the cooling plate 120 away from the wall plate 112 may be a flat surface and does not define the grooves 121. Accordingly, the stiffener 130 may directly abut against the flat surface of the cooling plate 120 without the convex portions 131, or the stiffener 130 may be provided with the convex portions 121 and abut against the flat surface.
- the cooling plate 120 may be provided with a protrusion, accordingly, the stiffener 130 may define a depression, and the protrusion extends into the depression, such that relative stability of the cooling plate 120 and the stiffener 130 is realized.
- a surface of the stiffener 130 facing the cooling plate 120 may be in surface contact with the cooling plate 120.
- the surface of the stiffener 130 facing the cooling plate 120 may be a curved surface or a flat surface, and the surface contact can reduce a gap between the stiffener 130 and the cooling plate 120 and avoid deformation of the cooling plate 120 as much as possible.
- the stiffener 130 may be a long-strip plate, and the cooling plate 120 may also be a substantially rectangular plate.
- the stiffener 130 may extend from one side of the cooling plate 120 to another side of the cooling plate 120.
- Two opposite ends of the stiffener 130 in a length direction of the stiffener 130 may be located on two sides of the cooling plate 120 respectively, such that the cooling plate 120 is abutted against by the stiffener 130 in the length direction of the stiffener 130.
- a surface of the stiffener 130 away from the wall plate 112 may be parallel to the wall plate 112.
- the stiffener 130 may be disposed in a curved shape, and the stiffener 130 may be bent on the surface of the cooling plate 120, or in other implementations, the stiffener 130 may also be in a plate shape which is similar to the shape of the cooling plate 120.
- the battery box 100 may include three stiffeners 130, and the three stiffeners 130 may be arranged at intervals.
- the three stiffeners 130 may be arranged in parallel. It can be understood that in other implementations of the present disclosure, the three stiffeners 130 may be arranged at intervals and at an angle with each other. Alternatively, the three stiffeners 130 may be arranged in an interconnected manner, for example, the three stiffeners 130 are connected in an "H" shape, etc.
- the number of the stiffener 130 may not be limited to three, for example, may be one, two, four or more, and so on.
- a shape of the stiffener 130 is not limited.
- the stiffener 130 may be implemented as one stiffener 130, the stiffener 130 may be in a scattering form, the stiffener 130 may have portions extending in multiple directions, and each portion can abut against the cooling plate 120.
- two of the three stiffeners 130 may be connected with the two opposite ends of the cooling plate 120 respectively.
- one stiffener 130 may be connected with one end of the cooling plate 120
- another stiffener 130 may be connected with another end of the cooling plate 120.
- One remaining stiffener 130 may be connected with a middle of the cooling plate 120, where the middle is not limited to a middle position of the cooling plate 120 in size, but means a position which is not at ends of the cooling plate 120.
- edge lifting of an end of the cooling plate 120 can be avoided under an action of the stiffener 130.
- the stiffener 130 can keep the end of the cooling plate 120 and the box body 110 in an abutting state. Even if the battery box 100 is subjected to a force applied by environment or the battery module, a sealing failure caused by the force applied to a weal seam between the cooling plate 120 and the box body 110 will not occur, thereby avoiding a failure of a cooling effect.
- the stiffener 130 may not be connected with the end of the cooling plate 120.
- the battery box 100 may further have a heat insulation layer 140, the insulation layer 140 may be connected with the side of the cooling plate 120 away from the wall plate 112 by spraying, and the stiffener 130 may abut against the heat insulation layer 140.
- the heat insulation layer 140 can insulate the cooling plate 120 to prevent a cooling capacity of the cooling plate 120 from losing to the side of the cooling plate 120 away from the wall plate 112.
- the heat insulation layer 140 may be formed by curing of a heat insulation adhesive attached to the surface of the cooling plate 120, and a shape of a surface of the heat insulation layer 140 away from the surface of the cooling plate 120 may be similar to a shape of the cooling plate 120 away from the wall plate 112. Therefore, in implementations, the shape of the cooling plate 120 is taken as an example to describe. It can be understood that the shape of the surface of the heat insulation layer 140 away from the wall plate 112 may also be changed according to filling requirements.
- FIG. 4 is a partial schematic diagram of a battery box 100 in the present disclosure.
- the stiffener 130 may be connected with the battery box 100 through bolts.
- the box body 110 may be provided with a lifting lug 113
- the wall plate 112 may be provided with a connecting portion 114
- the connecting portion 114 may be connected with an end of the lifting lug 113 to form a lifting ring
- the stiffener 130 may be connected with the connecting portion 114.
- the wall plate 112 may be provided with the connecting portion 114 which protrudes from the wall plate 112, and the connecting portion 114 and the lifting lug 113 may be enclosed to form the lifting ring.
- the connecting portion 114 may be integrated with the lifting lug 113, which is beneficial to reducing a space occupied by the lifting lug 113, so as to reduce a volume of the box body 110.
- the stiffener 130 may be connected with the connecting portion 114, and the connecting portion 114 can be connected with the stiffener 130 without bending the stiffener 130.
- the stiffener 130 may also be connected with the box body 110 in other connection manners.
- the stiffener 130 and the box body 110 may be welded together, or be connected by screw threads or clamping.
- the battery box 100 provided in implementations of the present disclosure at least has following advantages.
- the cooling plate 120 is connected with the wall plate 112 of the box body 110, the stiffener 130 abuts against the side of the cooling plate 120 away from the wall plate 112, and the stiffener 130 is connected with the box body 110.
- the stiffener 130 can keep the cooling plate 120 and the box body 110 in the abutting state.
- the stiffener 130 is connected with the box body 110 and abuts against the cooling plate 120 to increase strength and stiffness of a connection between the cooling plate 120 and the box body 110, so as to avoid the sealing failure caused by the force applied to the weld seam between the cooling plate 120 and the box body 110 during the operation of the battery pack, which leads to the failure of the cooling effect of the cooling plate 120.
- the fitting connections among the convex portions 131 and the grooves 121 can make the stiffener 130 and the cooling plate 120 better abut against each other, so as to increase a fitting degree of the stiffener 130 and the cooling plate 120.
- a battery pack is further provided in implementations of the present disclosure.
- the battery pack may include a battery module and the above battery box 100, and the battery module is mounted in the battery box 100.
- the battery pack has at least all the advantages of the above battery box 100, and the cooling plate 120 of the battery pack can have a relatively great cooling effect on the battery pack.
- the battery box and the battery pack are provided in the present disclosure.
- the battery box includes a box body, a cooling plate, and a stiffener.
- the cooling plate is connected with the outside of the wall plate of the box body, and the stiffener is connected with the box body and abuts against the side of the cooling plate away from the wall plate.
- the cooling plate is connected with the box body, the stiffener is connected with the box body, and the stiffener abuts against the side of the cooling plate away from the wall plate.
- the stiffener can keep the cooling plate and the box body in the abutting state, and when the cooling plate is subjected to the external pressure or the action of the battery module, the cooling plate may be bent or deformed, resulting in the gap between the cooling plate and the wall plate.
- the stiffener is connected with the box body and abuts against the cooling plate to increase the strength and the stiffness of the connection between the cooling plate and the box body, so as to avoid the sealing failure caused by the force applied to the weld seam between the cooling plate and the box body during the operation of the battery pack, which leads to the failure of the cooling effect of the cooling plate.
- the battery box and the battery pack of the present disclosure can be reproduced and can be used in a variety of industrial applications.
- the battery box and battery pack of the present disclosure can be used for any component that requires a battery to supply power.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
- This disclosure claims priority to
Chinese Patent Application No. 202021537100.5, filed July 29, 2020 - This disclosure relates to the field of batteries, and in particular to a battery box and a battery pack.
- A battery box is mainly configured to support and accommodate a battery module. Since the battery module will generate heat during use, a cooling system needs to be adopted to cool the battery module. In the related art, the cooling system includes a cooling plate attached to an outside of the battery box, and the cooling plate is connected with the battery box. When a battery pack is in a vehicle and in operation, a connection between a liquid cooling plate and the battery box is stressed directly, which easily leads to a failure of the connection, and then leads to a failure of a cooling effect of the liquid cooling plate.
- A battery box and a battery pack are provided in implementations of the present disclosure, and improve a cooling effect of a cooling system on a battery module.
- A battery box is provided in implementations of the present disclosure. The battery box may include a box body, a cooling plate, and a stiffener. The cooling plate is connected with an outside of a wall plate of the box body, and the stiffener is connected with the box body and abuts against a side of the cooling plate away from the wall plate.
- The cooling plate is connected with the wall plate, and the stiffener is connected with the box body and abuts against the side of the cooling plate away from the wall plate. The stiffener can keep the cooling plate and the box body in a fitting state. If stiffener does not exist, when the cooling plate is subjected to an external pressure or under an action of a battery module, the cooling plate may be bent and deformed, resulting in a gap between the cooling plate and the wall plate. The stiffener is connected with the box body and abuts against the cooling plate to increase strength and stiffness of a connection between the cooling plate and the box body, so as to avoid a sealing failure caused by a force applied to a weld seam between the cooling plate and the box body during operation of the battery pack, which leads to a failure of a cooling effect of the cooling plate.
- In some implementations of the present disclosure, the cooling plate may define grooves at the side of the cooling plate away from the box body, and the stiffener may be provided with convex portions in fit with the grooves, and the convex portions may extend into the grooves respectively and abut against at least part of inner side surfaces of the grooves.
- Fitting connections among the convex portions and the grooves can make the stiffener and the cooling plate better abut against each other, so as to increase a fitting degree of the stiffener and the cooling plate.
- In some implementations of the present disclosure, the cooling plate may have convex portions at the side of the cooling plate away from the box body, and the stiffener may define grooves in fit with the convex portions, and the convex portions may extend into the grooves respectively and abut against at least part of inner side surfaces of the grooves.
- In some implementations of the present disclosure, a number of the convex portions may be less than or equal to a number of the grooves.
- In some implementations of the present disclosure, a surface of the cooling plate away from the box body may be a flat surface.
- In some implementations of the present disclosure, the stiffener may be not provided with convex portions and directly abut against the flat surface of the cooling plate; or the stiffener may be provided with the convex portions and abut against the flat surface of the cooling plate through the convex portions.
- In some implementations of the present disclosure, the stiffener may be in surface contact with a surface of the cooling plate away from the wall plate.
- Surface contact between the stiffener and the cooling plate can make the stiffener and the cooling plate have a better fitting degree, so as to avoid a gap between the stiffener and the cooling plate.
- In some implementations of the present disclosure, a surface of the stiffener facing the cooling plate may be a curved surface or a flat surface.
- In some implementations of the present disclosure, the battery box may further include a heat insulation layer attached to the side of the cooling plate away from the wall plate, and the heat insulation layer may abut against the stiffener.
- The heat insulation layer can insulate the cooling plate to prevent a cooling capacity of the cooling plate from losing to the side of the cooling plate away from the wall plate.
- In some implementations of the present disclosure, the stiffener may be implemented as a plurality of stiffeners arranged at intervals.
- In some implementations of the present disclosure, the stiffener may be implemented as three or more stiffeners, two stiffeners are connected with two ends of the cooling plate respectively, and rest of stiffeners are connected with a middle of the cooling plate.
- In some implementations of the present disclosure, two opposite ends of the stiffener may be located at two sides of the cooling plate respectively, and one end of the stiffener is connected with one side of the wall plate.
- In some implementations of the present disclosure, the box body may be provided with a lifting lug, the wall plate may be provided with a connecting portion, the connecting portion may be connected with an end of the lifting lug to form a lifting ring, and the stiffener may be connected with the connecting portion.
- In some implementations of the present disclosure, the connecting portion may be integrated with the lifting lug.
- The connecting portion is integrated with the lifting lug, which is beneficial to reducing a space occupied by the lifting lug, so as to reduce a volume of the box body.
- In some implementations of the present disclosure, the stiffener may be plate-like, and a surface of the stiffener away from the wall plate may be parallel to the wall plate.
- A battery pack is further provided in implementations of the present disclosure. The battery pack includes a battery module and the battery box which is provided according to the above implementations, and the battery module is mounted in the battery box.
- In order to explain technical solutions in implementations of the present disclosure more clearly, the following will give a brief introduction to accompanying drawings which are needed to be used in description of implementations or the related art. It should be understood that followings drawings only illustrate some implementations of the present disclosure and thus should not be considered as limitation to the scope. For those of ordinary skill in the art, other accompanying drawings can be obtained according to these accompanying drawings without creative efforts.
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FIG. 1 is a schematic structural diagram of a battery box from a first view provided in implementations of the present disclosure. -
FIG. 2 is a schematic structural diagram of a battery box from a second view provided in implementations of the present disclosure. -
FIG. 3 is a schematic structural diagram of a cooling plate and stiffeners provided in implementations of the present disclosure. -
FIG. 4 is a partial schematic diagram of a battery box in the present disclosure. - 100-battery box; 110-box body; 112-wall plate; 113-lifting lug; 114-connecting portion; 120-cooling plate; 121-groove; 130-stiffener; 131-convex portion; 140-heat insulation layer.
- In order to make a purpose, a technical solution, and an advantage of implementations of the present disclosure clearer, the technical solution of implementations of the present disclosure will be described clearly and completely in conjunction with accompanying drawings in implementations of the present disclosure. Obviously, described implementations are part of implementations of the present disclosure, not all of implementations. Generally, the assemblies of implementations of the present disclosure, which are described and illustrated in the accompanying drawings herein, may be arranged and designed in a variety of different configurations.
- Therefore, the detailed description of implementations of the present disclosure provided in the accompanying drawings is not intended to limit the claimed scope of the present disclosure, but illustrates only the selected implementations of the present disclosure. All other implementations, obtained by those of ordinary skill in the art in light of implementations of the present disclosure without inventive efforts, will all fall within the claimed scope of the present disclosure.
- It should be noted that similar signs and letters indicate similar items in the following accompanying drawings, and therefore, once an item is defined in an accompanying drawing, it is not necessary to further define or explain it in the subsequent accompanying drawings.
- In the description of implementations of the present disclosure, it should be understood that orientation or positional relations indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", and "outside" are orientation or positional relations based on the accompanying drawings, or orientation or positional relations in which the application product is placed conventionally in use, or orientation or positional relations commonly understood by those skilled in the art, only for facilitating description of the present disclosure and simplifying the description, rather than indicating or implying that the referred devices or elements must be in a particular orientation or constructed or operated in the particular orientation, and therefore they should not be construed as limiting the present disclosure.
- In addition, terms such as "first", "second", etc., are used only for distinguishing the description, and should not be construed as indicating or implying relativity importance.
- In the description of the present disclosure, it should be indicated that unless otherwise expressly specified or defined, terms such as "provide", "mount", "couple", and "connect" should be understood broadly, and for example, a fixed connection, or a detachable connection, or an integrated connection; and may be a direct connection, or an indirect connection via an intermediate medium, or may be an internal communication between two elements. The specific meanings of the above-mentioned terms in the present disclosure could be understood by those of ordinary skill in the art according to specific situations.
- Reference can be made to
FIG. 1 and FIG. 2 , whereFIG. 1 is a schematic structural diagram of abattery box 100 from a first view provided in implementations of the present disclosure from a first view, andFIG. 2 is a schematic structural diagram of abattery box 100 from a second view provided in implementations of the present disclosure. Abattery box 100 is provided in implementations and configured to accommodate a battery module. - The
battery box 100 may include abox body 110, acooling plate 120, and astiffener 130. Thebox body 110 may define an accommodating space, the accommodating space can be used to accommodate the battery module (not illustrated in the accompanying drawings), thebattery box 100 may have awall plate 112, an inside of thewall plate 112 can constitute an inner wall of the accommodating space. - The
cooling plate 120 may be connected with thebox body 110, and thecooling plate 120 may be connected with an outside of thewall plate 112, that is, thecooling plate 120 may be connected with a side of thewall plate 112 away from the accommodating space. - The
stiffener 130 may abut against a side of thecooling plate 120 away from thewall plate 112, and thestiffener 130 may be connected with thebox body 110. - It should be noted that in implementations, the
wall plate 112 connected with thecooling plate 120 may be a bottom plate of thebox body 110, and thewall plate 112 may constitute a bottom wall of the accommodation space. It can be understood that in other implementations of the present disclosure, thewall plate 112 may be a side plate of thebox body 110, and the side plate may be connected with thecooling plate 120. Alternatively, in other implementations of the present disclosure, thecooling plate 120 may also be disposed on both the bottom plate and the side plate of thebox body 110 as needed. - In implementations, for example, the
wall plate 112 is the bottom plate of thebox body 110. It can be understood that an identical effect may also be realized if thewall plate 112 is the side plate of thebox body 110. - In implementations, the
wall plate 112 of thebox body 110 and thecooling plate 120 may be welded by friction stir welding. - Reference can be made to
FIG. 3 , which is a schematic structural diagram of acooling plate 120 andstiffeners 130 provided in implementations of the present disclosure. In implementations, thecooling plate 120 may be molded by stamping, and thecooling plate 120 may be provided with multiple cooling channels (not illustrated inFIG. 3 ) for a liquid coolant to flow. Therefore, multiple long-strip grooves 121 can be defined between outside walls of adjacent cooling channels. In other words, thecooling plate 120 may definemultiple grooves 121 at a surface of thecooling plate 120. Thestiffener 130 may abut against the surface of thecooling plate 120. - In implementations, the
stiffener 130 may be provided with multipleconvex portions 131, and oneconvex portion 131 is corresponding to onegroove 121. Oneconvex portion 131 may extend into onegroove 121, such that eachconvex portion 131 can abut against at least part of an inner side surface of eachgroove 121. In other words, the eachconvex portion 131 may extend into eachgroove 121, such that the eachconvex portion 131 abuts against a bottom surface, an inner side surface, or all inner surfaces of the eachgroove 121. It can be understood that the eachconvex portion 131 abuts against part of or all of inner surfaces of the eachgroove 121, which can avoid relative movement between the eachconvex portion 131 and the eachgroove 121, so as to make thestiffener 130 and thecooling plate 120 present a better abutting state, thereby preventing thestiffener 130 and thecooling plate 120 from moving relative to each other. - It should be noted that in other implementations of the present disclosure, the number of
convex portions 131 may be less than the number ofgrooves 121. For example, theconvex portions 131 of thestiffener 130 only extend into a part ofgrooves 121, which can also stabilize thestiffener 130 and thecooling plate 120. - In implementations, the each
groove 121 has almost the same shape and size, so the eachconvex portion 131 has almost the same shape and size. It can be understood that in other implementations of the present disclosure, themultiple grooves 121 may be designed to be not exactly the same as needed, and correspondingconvex portions 131 may be adaptively matched and adjusted. - In addition, in other implementations of the present disclosure, the
cooling plate 120 may not be in the shape illustrated in implementations of the present disclosure, and thegrooves 121 on the surface of thecooling plate 120 may be defined in a process of preparing cooling channels in an early stage or defined in a later stage. - A surface of the
cooling plate 120 away from thewall plate 112 may be a flat surface and does not define thegrooves 121. Accordingly, thestiffener 130 may directly abut against the flat surface of thecooling plate 120 without theconvex portions 131, or thestiffener 130 may be provided with theconvex portions 121 and abut against the flat surface. - It can be understood that in other implementations, the
cooling plate 120 may be provided with a protrusion, accordingly, thestiffener 130 may define a depression, and the protrusion extends into the depression, such that relative stability of thecooling plate 120 and thestiffener 130 is realized. - Optionally, in order to increase an abutting effect of the
stiffener 130 on thecooling plate 120, a surface of thestiffener 130 facing thecooling plate 120 may be in surface contact with thecooling plate 120. The surface of thestiffener 130 facing thecooling plate 120 may be a curved surface or a flat surface, and the surface contact can reduce a gap between thestiffener 130 and thecooling plate 120 and avoid deformation of thecooling plate 120 as much as possible. - In implementations, the
stiffener 130 may be a long-strip plate, and thecooling plate 120 may also be a substantially rectangular plate. Thestiffener 130 may extend from one side of thecooling plate 120 to another side of thecooling plate 120. Two opposite ends of thestiffener 130 in a length direction of thestiffener 130 may be located on two sides of thecooling plate 120 respectively, such that thecooling plate 120 is abutted against by thestiffener 130 in the length direction of thestiffener 130. - In implementations, a surface of the
stiffener 130 away from thewall plate 112 may be parallel to thewall plate 112. In other implementations of the present disclosure, thestiffener 130 may be disposed in a curved shape, and thestiffener 130 may be bent on the surface of thecooling plate 120, or in other implementations, thestiffener 130 may also be in a plate shape which is similar to the shape of thecooling plate 120. - Reference can made to
FIG. 3 again, and in some implementations, thebattery box 100 may include threestiffeners 130, and the threestiffeners 130 may be arranged at intervals. In implementations, the threestiffeners 130 may be arranged in parallel. It can be understood that in other implementations of the present disclosure, the threestiffeners 130 may be arranged at intervals and at an angle with each other. Alternatively, the threestiffeners 130 may be arranged in an interconnected manner, for example, the threestiffeners 130 are connected in an "H" shape, etc. - In addition, in other implementations of the present disclosure, the number of the
stiffener 130 may not be limited to three, for example, may be one, two, four or more, and so on. A shape of thestiffener 130 is not limited. For example, thestiffener 130 may be implemented as onestiffener 130, thestiffener 130 may be in a scattering form, thestiffener 130 may have portions extending in multiple directions, and each portion can abut against the coolingplate 120. - Optionally, in some implementations, two of the three
stiffeners 130 may be connected with the two opposite ends of thecooling plate 120 respectively. In other words, onestiffener 130 may be connected with one end of thecooling plate 120, and anotherstiffener 130 may be connected with another end of thecooling plate 120. One remainingstiffener 130 may be connected with a middle of thecooling plate 120, where the middle is not limited to a middle position of thecooling plate 120 in size, but means a position which is not at ends of thecooling plate 120. - In this arrangement manner, edge lifting of an end of the
cooling plate 120 can be avoided under an action of thestiffener 130. Thestiffener 130 can keep the end of thecooling plate 120 and thebox body 110 in an abutting state. Even if thebattery box 100 is subjected to a force applied by environment or the battery module, a sealing failure caused by the force applied to a weal seam between the coolingplate 120 and thebox body 110 will not occur, thereby avoiding a failure of a cooling effect. - It can be understood that in other implementations of the present disclosure, the
stiffener 130 may not be connected with the end of thecooling plate 120. - In implementations, the
battery box 100 may further have aheat insulation layer 140, theinsulation layer 140 may be connected with the side of thecooling plate 120 away from thewall plate 112 by spraying, and thestiffener 130 may abut against theheat insulation layer 140. - The
heat insulation layer 140 can insulate thecooling plate 120 to prevent a cooling capacity of thecooling plate 120 from losing to the side of thecooling plate 120 away from thewall plate 112. - In some implementations, the
heat insulation layer 140 may be formed by curing of a heat insulation adhesive attached to the surface of thecooling plate 120, and a shape of a surface of theheat insulation layer 140 away from the surface of thecooling plate 120 may be similar to a shape of thecooling plate 120 away from thewall plate 112. Therefore, in implementations, the shape of thecooling plate 120 is taken as an example to describe. It can be understood that the shape of the surface of theheat insulation layer 140 away from thewall plate 112 may also be changed according to filling requirements. - Reference can be made to
FIG. 4 , which is a partial schematic diagram of abattery box 100 in the present disclosure. In implementations, thestiffener 130 may be connected with thebattery box 100 through bolts. - The
box body 110 may be provided with a liftinglug 113, thewall plate 112 may be provided with a connectingportion 114, the connectingportion 114 may be connected with an end of the liftinglug 113 to form a lifting ring, and thestiffener 130 may be connected with the connectingportion 114. - In some implementations, the
wall plate 112 may be provided with the connectingportion 114 which protrudes from thewall plate 112, and the connectingportion 114 and the liftinglug 113 may be enclosed to form the lifting ring. The connectingportion 114 may be integrated with the liftinglug 113, which is beneficial to reducing a space occupied by the liftinglug 113, so as to reduce a volume of thebox body 110. In addition, thestiffener 130 may be connected with the connectingportion 114, and the connectingportion 114 can be connected with thestiffener 130 without bending thestiffener 130. - It should be noted that in other implementations of the present disclosure, the
stiffener 130 may also be connected with thebox body 110 in other connection manners. For example, thestiffener 130 and thebox body 110 may be welded together, or be connected by screw threads or clamping. - The
battery box 100 provided in implementations of the present disclosure at least has following advantages. Thecooling plate 120 is connected with thewall plate 112 of thebox body 110, thestiffener 130 abuts against the side of thecooling plate 120 away from thewall plate 112, and thestiffener 130 is connected with thebox body 110. Thestiffener 130 can keep thecooling plate 120 and thebox body 110 in the abutting state. Thestiffener 130 is connected with thebox body 110 and abuts against the coolingplate 120 to increase strength and stiffness of a connection between the coolingplate 120 and thebox body 110, so as to avoid the sealing failure caused by the force applied to the weld seam between the coolingplate 120 and thebox body 110 during the operation of the battery pack, which leads to the failure of the cooling effect of thecooling plate 120. - Optionally, in terms of implementations of connecting the
stiffener 130 and thecooling plate 120 by fitting connections among theconvex portions 131 and thegrooves 121, the fitting connections among theconvex portions 131 and thegrooves 121 can make thestiffener 130 and thecooling plate 120 better abut against each other, so as to increase a fitting degree of thestiffener 130 and thecooling plate 120. - A battery pack is further provided in implementations of the present disclosure. The battery pack may include a battery module and the
above battery box 100, and the battery module is mounted in thebattery box 100. - The battery pack has at least all the advantages of the
above battery box 100, and thecooling plate 120 of the battery pack can have a relatively great cooling effect on the battery pack. - The above descriptions are only preferred implementations of the present disclosure, and are not used to limit the present disclosure. For those skilled in the art, the present disclosure may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present disclosure shall be included in the scope of protection of the present disclosure.
- The battery box and the battery pack are provided in the present disclosure. The battery box includes a box body, a cooling plate, and a stiffener. The cooling plate is connected with the outside of the wall plate of the box body, and the stiffener is connected with the box body and abuts against the side of the cooling plate away from the wall plate. The cooling plate is connected with the box body, the stiffener is connected with the box body, and the stiffener abuts against the side of the cooling plate away from the wall plate. The stiffener can keep the cooling plate and the box body in the abutting state, and when the cooling plate is subjected to the external pressure or the action of the battery module, the cooling plate may be bent or deformed, resulting in the gap between the cooling plate and the wall plate. The stiffener is connected with the box body and abuts against the cooling plate to increase the strength and the stiffness of the connection between the cooling plate and the box body, so as to avoid the sealing failure caused by the force applied to the weld seam between the cooling plate and the box body during the operation of the battery pack, which leads to the failure of the cooling effect of the cooling plate.
- In addition, it can be understood that the battery box and the battery pack of the present disclosure can be reproduced and can be used in a variety of industrial applications. For example, the battery box and battery pack of the present disclosure can be used for any component that requires a battery to supply power.
Claims (16)
- A battery box, comprising:a box body;a cooling plate connected with an outside of a wall plate of the box body; anda stiffener connected with the box body and abutting against a side of the cooling plate away from the wall plate.
- The battery box of claim 1, wherein the cooling plate defines grooves at the side of the cooling plate away from the box body, and the stiffener is provided with convex portions in fit with the grooves, and the convex portions extend into the grooves respectively and abut against at least part of inner side surfaces of the grooves.
- The battery box of claim 1, wherein the cooling plate has convex portions at the side of the cooling plate away from the box body, and the stiffener defines grooves in fit with the convex portions, and the convex portions extend into the grooves respectively and abut against at least part of inner side surfaces of the grooves.
- The battery box of claim 2 or 3, wherein a number of the convex portions is less than or equal to a number of the grooves.
- The battery box of claim 1, wherein a surface of the cooling plate away from the box body is a flat surface.
- The battery box of claim 5, wherein the stiffener is not provided with convex portions and directly abuts against the flat surface of the cooling plate; or the stiffener is provided with the convex portions and abuts against the flat surface of the cooling plate through the convex portions.
- The battery box of any of claims 1 to 6, wherein the stiffener is in surface contact with a surface of the cooling plate away from the wall plate.
- The battery box of any of claims 1 to 7, wherein a surface of the stiffener facing the cooling plate is a curved surface or a flat surface.
- The battery box of any of claims 1 to 8, further comprising:
a heat insulation layer being connected with the side of the cooling plate away from the wall plate and abutting against the stiffener. - The battery box of any of claims 1 to 9, wherein the stiffener is implemented as a plurality of stiffeners arranged at intervals.
- The battery box of any of claims 1 to 10, wherein the stiffener is implemented as three or more stiffeners, two stiffeners abut against two ends of the cooling plate respectively, and rest of stiffeners are connected with a middle of the cooling plate.
- The battery box of any of claims 1 to 11, wherein the stiffener has two opposite ends located at two sides of the cooling plate respectively and each connected with the wall plate.
- The battery box of any of claims 1 to 12, wherein the box body is provided with a lifting lug, the wall plate is provided with a connecting portion, the connecting portion is connected with an end of the lifting lug to form a lifting ring, and the stiffener is connected with the connecting portion.
- The battery box of claim 13, wherein the connecting portion is integrated with the lifting lug.
- The battery box of any of claims 1 to 14, wherein the stiffener is plate-like, and a surface of the stiffener away from the wall plate is parallel to the wall plate.
- A battery pack, comprising:a battery module; andthe battery box of any of claims 1 to 15, wherein the battery module is mounted in the battery box.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202021537100.5U CN212648376U (en) | 2020-07-29 | 2020-07-29 | Battery box and battery package |
PCT/CN2021/080306 WO2022021885A1 (en) | 2020-07-29 | 2021-03-11 | Battery case and battery pack |
Publications (2)
Publication Number | Publication Date |
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EP4120456A1 true EP4120456A1 (en) | 2023-01-18 |
EP4120456A4 EP4120456A4 (en) | 2023-09-13 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP21848979.7A Pending EP4120456A4 (en) | 2020-07-29 | 2021-03-11 | Battery case and battery pack |
Country Status (4)
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US (1) | US11791514B2 (en) |
EP (1) | EP4120456A4 (en) |
CN (1) | CN212648376U (en) |
WO (1) | WO2022021885A1 (en) |
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CN212648376U (en) * | 2020-07-29 | 2021-03-02 | 厦门海辰新能源科技有限公司 | Battery box and battery package |
CN116995359B (en) * | 2023-09-25 | 2024-01-26 | 厦门海辰储能科技股份有限公司 | Battery box, battery cluster, energy storage system and electric equipment |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010192207A (en) * | 2009-02-17 | 2010-09-02 | Mitsubishi Heavy Ind Ltd | Cooling device for battery, and battery pack |
DE102011084660B4 (en) * | 2011-10-18 | 2018-02-15 | Bayerische Motoren Werke Aktiengesellschaft | Device for power supply |
CN102780052A (en) * | 2012-06-28 | 2012-11-14 | 陆宁 | Temperature controllable type lithium ion battery module for vehicles |
CN105655510B (en) * | 2016-03-21 | 2018-11-06 | 昆山特朗普新能源汽车零部件有限公司 | A kind of battery for electric automobile case |
CN206742456U (en) * | 2017-06-01 | 2017-12-12 | 东莞市沃泰通新能源有限公司 | Battery case liquid-cooling heat radiation structure |
CN208507762U (en) * | 2018-06-14 | 2019-02-15 | 宁德时代新能源科技股份有限公司 | Battery pack and electric car |
CN209104315U (en) * | 2018-09-05 | 2019-07-12 | 合肥国轩高科动力能源有限公司 | A kind of power battery transport formula liquid cooling system |
CN109333901A (en) * | 2018-09-21 | 2019-02-15 | 浙江清优材料科技有限公司 | It is integrated with the die forming integrated technique and equipment of the liquid cooling plate of thermal insulation layer |
CN111065238A (en) * | 2018-10-17 | 2020-04-24 | 常州常发制冷科技有限公司 | Liquid cooling bottom plate with enhanced structure |
CN209183605U (en) * | 2018-12-27 | 2019-07-30 | 宁德时代新能源科技股份有限公司 | Battery case |
CN110492042A (en) * | 2019-09-21 | 2019-11-22 | 曼弗莱德智能制造(江苏)有限公司 | A kind of new energy Battery case |
CN212648376U (en) * | 2020-07-29 | 2021-03-02 | 厦门海辰新能源科技有限公司 | Battery box and battery package |
-
2020
- 2020-07-29 CN CN202021537100.5U patent/CN212648376U/en active Active
-
2021
- 2021-03-11 WO PCT/CN2021/080306 patent/WO2022021885A1/en unknown
- 2021-03-11 EP EP21848979.7A patent/EP4120456A4/en active Pending
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2022
- 2022-10-13 US US17/965,272 patent/US11791514B2/en active Active
Also Published As
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WO2022021885A1 (en) | 2022-02-03 |
EP4120456A4 (en) | 2023-09-13 |
US20230037055A1 (en) | 2023-02-02 |
US11791514B2 (en) | 2023-10-17 |
CN212648376U (en) | 2021-03-02 |
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